Dental floss holder



FIG. 1 is a front elevational view of a dental floss holder showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a right elevational side view thereof;

FIG. 4 is a left elevational side view thereof;

FIG. 5 is a bottom plan view thereof, and

FIG. 6 is an enlarged broken-away perspective view of the bottom half thereof. 

The ornamental design for a "dental floss holder", substantially as shown and described. 